Full definition
Size-reduction machine that breaks rock by high-speed impact of rotating bars or hammers (300–700 rpm) against material and replaceable wear plates. Produces cubic-shaped product and higher fines content than compression crushers. Suitable for soft to medium-hard rock (limestone, gypsum, coal; up to 200 MPa). Capacities: 50–500 t/h. Brands: Metso NP Series, Sandvik CI, Kleemann.